STACK OFF, verb. (poker slang) (of two or more players) To play an all in pot; to commit all of one's chips to a pot.

STACK TRACE, noun. (computing) A hierarchical trace of the function calls made by a program, used in debugging.

STACK TRACES, noun. Plural of stack trace

STACK UP, verb. (transitive) To put into a stack

STACK UP, verb. (intransitive) to pile up; to accumulate

STACK UP, verb. (idiomatic) (transitive) To put a group of abstract things together.

STACK UP, verb. To compare with something; to measure up. (Often used with "against", "among")

STACK Z'S, verb. (idiomatic) To sleep; to be asleep

Dictionary definition

STACK, noun. An orderly pile.

STACK, noun. (often followed by `of') a large number or amount or extent; "a batch of letters"; "a deal of trouble"; "a lot of money"; "he made a mint on the stock market"; "see the rest of the winners in our huge passel of photos"; "it must have cost plenty"; "a slew of journalists"; "a wad of money".

STACK, noun. A list in which the next item to be removed is the item most recently stored (LIFO).

STACK, noun. A large tall chimney through which combustion gases and smoke can be evacuated.

STACK, noun. A storage device that handles data so that the next item to be retrieved is the item most recently stored (LIFO).

STACK, verb. Load or cover with stacks; "stack a truck with boxes".

STACK, verb. Arrange in stacks; "heap firewood around the fireplace"; "stack your books up on the shelves".

STACK, verb. Arrange the order of so as to increase one's winning chances; "stack the deck of cards".

Wise words

The difference between the right word and the almost right
word is the difference between lightning and a lightning
bug.